Sangchris Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Sangchris Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Sangchris Lake today is 12.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 26 | 16.0°C | 20.5°C | |
| OCT 27 | 16.3°C | 20.5°C | |
| OCT 28 | 15.7°C | 20.5°C | |
| OCT 29 | 16.1°C | 20.5°C | |
| OCT 30 | 15.5°C | 20.5°C | |
| OCT 31 | 15.9°C | 20.5°C | |
| NOV 1 | 15.5°C | 11.9°C | |
| NOV 2 | 12.9°C | 11.9°C | |
| NOV 3 | 11.9°C | 12.9°C | |
| NOV 4 | 11.9°C | 12.8°C | |
| NOV 5 | 11.9°C | 12.8°C | |
| NOV 6 | 11.9°C | 12.7°C | |
| NOV 7 | 11.9°C | 12.7°C | |
| NOV 8 | 11.9°C | 12.6°C | |
| NOV 9 | 11.9°C | 12.6°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 1°C | 4°C | 7°C |
| February | 1°C | 4°C | 6°C |
| March | 3°C | 7°C | 11°C |
| April | 5°C | 11°C | 18°C |
| May | 15°C | 19°C | 23°C |
| June | 21°C | 23°C | 26°C |
| July | 24°C | 29°C | 33°C |
| August | 24°C | 28°C | 31°C |
| September | 22°C | 26°C | 30°C |
| October | 15°C | 21°C | 26°C |
| November | 7°C | 12°C | 16°C |
| December | 2°C | 6°C | 9°C |
Sangchris Lake: Water Temperature by Location
Sangchris Lake: Weather Forecast
November 3
November 4
November 5
November 6
November 7
Location & Local Information
Sangchris Lake’s surface water temperatures follow the typical seasonal pattern for a central Illinois reservoir. In winter the lake often nears freezing, with surface readings commonly in the low 30s to around 40 °F (0 to 4 °C). Spring warming pushes temperatures into the 40s and 50s °F (4 to 15 °C) as runoff and air temperatures rise. During summer the top layer of the lake typically warms into the upper 60s to low 80s °F (20 to 28 °C), and on hot, calm stretches can reach the mid-80s °F (around 29 °C). In autumn the surface cools again through the 50s and 40s °F (10 to 4 °C). Like many reservoirs, Sangchris can stratify in summer so deeper water stays markedly cooler than the surface, and temperatures can vary with wind, inflow, and recent weather.
Swimming at Sangchris Lake is not provided with a staffed, official swim beach and is generally not promoted by managing agencies. The area is managed primarily for boating, fishing and wildlife, and the absence of designated bathing facilities means there are no lifeguards or posted water-quality monitoring specific to swimmers. Boat traffic, submerged structures, variable depths and abrupt temperature differences between surface and deep water are common safety concerns, so if people do enter the water it is typically at their own risk and local rules and signage should be followed.